Nope, I don't feel sorry for her.
Firstly she didn't have to do a face to face statement and sniff all the way through it. She could have just put a statement out.
Secondly, it's fine to say you feel so bad about your remarks and the sacrifices people have made after you've been found out, she still stayed in the job for a year with those words 'haunting her for the rest of her days' didn't she?
And thirdly, if she'd have been any good at her job that video would have vindicated Downing Street, not added fuel. A trainee press secretary would bat off a question like 'we heard there was a party any comments' with 'it was a business meeting with food' - end of story. Not say 'what would you like me to say?' It was a practice run and she showed she was not good enough at her job to come up with an off the cuff answer without looking like a rabbit in the headlight.
Hence the move to COP and the defunct briefings she was supposed to be given this year.
She's snivelling because she got caught not because she's sorry. A few others will be doing the same shortly. No sympathy at all.