When you google her autograph there are different types of signatures ... But on this website you can see offically signed photos with her signature and I think it matches the autograph that GEllow1325 got.

Congratulations! This is pretty cool!
I will write to her, too!

I remember that she said on her instagram account that she won't reply to fanmail anymore a couple of years ago ... It seems she changed her mind.
Anyway, congrats to your success!

Glückwunsch! Ich habe meine Autogramme von ihm auch vor zwei Wochen bekommen

sent: 15.05.2023
what: letter, SASE, 2 photos

received: 21.06.2023
what: my 2 pictures signed in my SASE

Address:
Rhys Ifans
Pip Gill Publicity & Management
The Coach House
124 Brondesbury Road
London, NW6 6SB
UK

3 years? Wow! Great success! It's good to see someone replies after all this time.

Sent: 16.05.2023
Received: 31.05.2023 (RTS – not known)

Address:
Jasper Pääkkönen
Subtitle Talent
82 Great Portland Street
London, W1W 7LT
UNITED KINGDOM

[Source]

Wow! This is awesome!

Congrats! Haven't seen a success from him in ages. It makes me happy that he still reponds to fanmail

Sent: 12.05.2020 What: letter, SASE, two pics Received: 14.01.2022 What: both pics signed and dedicated in my SASE Address: Genevieve Gaunt United Agents Ltd. 12-26 Lexington Street London, W1F 0LE UK Link: https://www.instagram.com/p/CYwhgG8MVjX/ http://surfmypictures.com/photo/3305749f6820ee26/hyn...