F19 gf met with M20 ex due to intrusive thoughts.

we have been together for 6 months and are both 19, what happened was is that she met with her abusive ex and told me she was seeing a old school friend to talk about her mental health because it was bad. when i went to see her later on in the day she confessed that she actually got her ex to come and pick her up because she was having distressing intrusive thoughts that i would die if she did not see him. she said they only spent around 20 mins to half an hour together and nothing really happened she just told him she had to see him but couldn’t explain why.

i have obviously been really hurt by this however i want to continue with her as i believe she did experience these thoughts and i can see how hard that would have been, i just want to see some opinions on this and if you think i am being stupid to continue with her or i am right to do this due to the thoughts she was having?