يا ترى الخطا فين:When the plane took off, she held my hand strongly.

[ابو بيشو]

يا ترى الخطا فين:When the plane took off, she held my hand strongly.

[فتحى البعلى]

held my hand tightly

[ابو بيشو]

اليك منى كل احترام وتقدير
When the plane took off, she held my hand tightly.
Strongly is used with verbs such as suggest, advise, recommend,
agree i disagree, believe, feel etc (NOT with verbs that refer to actions):
'I would strongly advise you to think again.'