I think that I have offended a friend?

[DillieTantie]

I feel awful about this. Today, I received a Christmas card from a friend that I see maybe 2/3 times a year (we live 100 miles apart). She included a short note about some sad family news. I felt bad for her, and rather than wait to call her by phone as I know she is busy, I sent her a text message as an interim measure to say sorry about the bad news. Religion is a large and important part of this friends' life, but not mine. She does think that my life would be enhanced by religion, but we have agreed to differ on just this one thing. She sent me a very religious card. Unfortunately, I started the message with "Thank you for your good wishes" - er, apparently not - "Thank you for your god wishes" was what I said. When I looked at the sent message, I was horrified, but then I thought that she would just laugh and realise that it was my crap texting.
I tried to call her and explain, but she really wasn't happy and said that I was making fun of her religion whilst she was in difficult circumstances and that maybe we should part company.
I feel so bad and I hope we can mend our friendship. I am sure that she is stressed due to the bad news and that she didn't mean it.
Please help - what can I do to make this better? Other than double-checking texts before I send them?

Write her a letter and explain things? It will give some distance between her upset and your explanation.

Not sure what else you could do really.

A letter is a really good idea, thank you.

Hard times or not, she's being a bit precious.

The temptation to take the Bill Hicks route (You're a Christian, right? Forgive me?) would be tempting, but I agree if you want to salvage things a note saying "Surely you don't believe I would deliberately try to hurt you in such a crass way, it must be the pressure you're under, hope you're coping, can I help" letter would probably ease the situation.

I think she is over reacting as thanking someone for their god wishes might be taken nicely - she could be cross you didn't use a capital G.

I would write to her.

Yes, snigger, I did have that thought about the preciousness, but she is a friend, and not normally like this.
Fabetc - yes, it could have been a big G. Thankfully not - my texting is slack, but not that awful (actually, yes it is that awful - I once tried to say that I would pick my Mum up, and it came out as I will smack my Nun up. Not, I hasten to add, to the friend in question)
Maybe I should rely on the written and spoken word in future.
A letter is required. I thank all for the input.