Is there a possibility for Safiya to join the WhatsApp group and share her number there?

Yes, Safiya can join the WhatsApp group and share her number if the group administrator allows it.

She must follow the group's rules, which typically require respectful and constructive communication. Most student WhatsApp groups prohibit advertising, spam, and any form of discrimination. Sharing contact details is usually permitted for networking, but always check and respect the specific group guidelines before posting.