How do I meet up with a former teacher who I think liked me (19M) she (40F)?

Ok, so anyone reading this is prolly gonna just be like “wtf this could never work” and shoot it down. Which your probably right but I wanna see if there is maybe a small chance I could maybe pull something off. I have this Therapist I started seeing at school due to her being recommended by me from another teacher.

When I had started seeing her she was super helpful and cool with my about a really bad situation that had been going on w some other girl basically harassing me at school. This led to me getting her number and the reason for it was to send her the details of the drama in like bullet points or sm. I just wanna say SHE was the one who suggested me getting her number btw. It went like “Hey so how about you take my number so you’re able to send me the info on what happened.” After that passed I ended up seeing her more and I always felt like she possibly was flirting with me or thought I was cute maybe idk. There were a few times we were talking and she would make a remark or sm like “your so bad” or like “wow you really are crazy for girls aren’t you.”In like a flirty way.

So I have now graduated from school and am out and want to text her but have now clue what to say for it to not sound a little off. I’m 19 btw and she is prolly in her 40s. I have actually been with two other women one in their 30s and another in their 40s when I was 18 so I kinda have been down this road before😭😭😭. So she’s my type.

PS: I have dated girls ofc my age (4) to be exact it’s just I wanna see if I could maybe pull this off bc she’s super hot and honestly a cool person too who did help me out a lot this year