She says shes interested but always says she's too nervous to date. When do i draw the line? Its been 2 yrs

[Lucky]

I am about to turn 25 and I've been single for a very long time. Not because i'm ugly or undesirable, I could date. Its more I just chose not to, mostly because I haven't really had the time to. I had 2 jobs and I was always busy. Especially with my 3 year old daughter. But now I have a lot more free time and I just want to start that next stage in my life. I've been talking to someone online for a couple years. She's really amazing, except for the fact that she is really nervous to meet up with me. She says its because she has a serotonin problem I don't really know what that means but she says it controls a lot of different feeling in her body from being moody, and anger to feelings of panic and sexual feeling. I really like talking to her every night, its probably one of my favorite things to do, but shhas never made it out to see me, even though she only lives like 10min away. For the last 2 weeks every night she says she'll try to come over but then says she's too nervous.
I am about to turn 25 and I've been single for a very long time. Not because i'm ugly or undesirable, I could date. Its more I just chose not to, mostly because I haven't really had the time to. I had 2 jobs and I was always busy. Especially with my 3 year old daughter. But now I have a lot more free time and I just want to start that next stage in my life. I've been talking to someone online for a couple years. She's really amazing, except for the fact that she is really nervous to meet up with me. She says its because she has a serotonin problem I don't really know what that means but she says it controls a lot of different feeling in her body from being moody, and anger to feelings of panic and sexual feeling. I really like talking to her every night, its probably one of my favorite things to do, but shhas never made it out to see me, even though she only lives like 10min away. For the last 2 weeks every night she says she'll try to come over but then says she's too nervous.
Whoops didnt mean to hit the explanation twice, i know its a girl we talk on webcam a lot... but i guess she never dates, and is scared of rejection, but as i much as i try to reassure her it doesnt help. Plus she wont let me come over