Background: Tara Maclay is a fictional character created for the action-horror/fantasy television series Buffy the Vampire Slayer (1997-2003). She was developed by Joss Whedon and portrayed by Amber Benson. Tara is a shy young woman with magical talents who falls in love with Willow Rosenberg, one of the core characters. Together, they help Buffy Summers, who has been given superhuman powers to defeat evil forces in the fictional town of Sunnydale.
Context: Tara becomes more outspoken during the sixth season about the ethics of Willow's use of magic, cautioning Willow that she depends too much on it. The dynamics of their relationship suddenly turn during "Once More, with Feeling". Willow had cast a spell on Tara to alter her memory in the preceding episode and Tara finds out about it during "Once More, with Feeling", the musical episode of the series. Tara was given a prominent role in the musical due to the skill of Benson's voice: she sings a love ballad to Willow, a duet with Giles, and backup in two other songs. The musical nature of the episode compelled the characters to express what they had been feeling secretly, or had refused to admit to themselves. Tara's song is a fervent and explicit expression of love for Willow which she had not made clear to the audience until this point. Tara later sings with Giles that she will leave Willow if she does not change. Self-conscious about her singing abilities, Hannigan requested not to be given a song and sings only a few lines in the episode. Critics saw this as Tara's personality becoming more forceful as Willow begins to show signs of weakness as she is overtaken by her addiction. Tara challenges Willow to go for a week without using any magic. Willow almost immediately breaks her promise, however, and Tara leaves her at the end of "Tabula Rasa". Tara remains a part of the group, spending time with Dawn, and non-judgmentally acting as Buffy's confessor when Buffy divulges she has a painful and compulsive sexual relationship with Spike, a vampire whom she loathes.  Despite their separation, Tara remains devoted to Willow's recovery and supports her in her decision to abstain from using magic. She is, according to author Lorna Jowett, one of the few characters who is never seduced by evil. Shuttleworth notes that most Buffy characters go through a rite of transformation except for Tara. Among female characters she is the most virtuous. Like the other Buffy characters in the series whose names have symbolic interpretations, Tara's name resembles the Latin terra, meaning "earth." She is solidly grounded, with Willow attached to her, and Benson's body more naturally representative of women. Tara is wholly feminine both in dress and demeanor, as opposed to Buffy and (less) Willow mostly dressed with trousers and jackets, but never seeks male approval. She is clad in earthy, natural colors, long flowing skirts and clinging blouses, with an intent to comfort instead of arouse as other women on the show are dressed. Her admonishments to other characters are always made with love, with their best interests at heart. Even Tara's last words, commenting that Willow's shirt is stained (with Tara's own blood), indicate her preoccupation with the welfare of others.  Tara has also appeared in The Long Way Home, Always Darkest, Retreat, and the one-off Willow.
Question: What are her issues with Willow's use of magic?. Whats the answer?
cautioning Willow that she depends too much on it.