She is a reliable friend who always supports me.

Able to be trusted to do what is expected or promised in relationships.
You can count on him; he is a reliable partner.
It's important to have reliable family members during tough times.
They are known for being reliable caregivers.
reliable source
reliable support
reliable information
trustworthy
dependable
faithful
She is a reliable team member.

Able to be trusted to perform well or consistently in a work setting.
You can count on him; he is reliable.
The project needs a reliable leader.
They hired a reliable assistant for the job.
reliable source
reliable service
reliable employee
dependable
trustworthy
consistent
She is a reliable friend.

Able to be trusted or depended on.
This car is very reliable.
You can count on him; he is reliable.
The service here is reliable.
reliable source
reliable information
reliable service
trustworthy
dependable
consistent
She is a reliable friend.

Able to be trusted or depended on.
He is a reliable employee.
This car is known for being reliable.
You can count on her; she is very reliable.
reliable source
reliable information
reliable service
dependable
trustworthy
steadfast